Cadmium accumulation and tolerance of two castor cultivars in relation to antioxidant systems
文献类型：SCI/SSCI论文
| 作者 | Zhang H. Z. ; Guo Q. J. ; Yang J. X. ; Chen T. B. ; Zhu G. X. ; Peters M. ; Wei R. F. ; Tian L. Y. ; Wang C. Y. ; Tan D. Y. ; Ma J. ; Wang G. M. ; Wan Y. X. |
| 发表日期 | 2014 |
| 关键词 | Cadmium Castor Antioxidant activity Tolerance Phytoremediation ricinus-communis l. brassica-juncea l. induced oxidative stress metal-contaminated soil higher-plants heavy-metals lipid-peroxidation phytoremediation leaves growth |
| 英文摘要 | To investigate the effects of Cd on tolerance and antioxidant activities of castor, two different castor (Ricinus communis L.) cultivars (Zibo No. 5 and Zibo No. 8) were used for a hydroponic experiment (0, 1 and 2 mg/L Cd) and a pot experiment using Cd-contaminated soil (34 mg/kg) with the addition of ethylenedinitrilotetraacetic acid (EDTA). The results indicated that there were significant differences between the two cultivars with respect to Cd uptake in shoots (113-248 mg/kg for Zibo No. 5 and 130-288 mg/kg Zibo No. 8), biomass tolerance indexes (64.9%-74.6% for Zibo No. 5 and 80.1%-90.9% for Zibo No. 8) in the hydroponic experiment and survival rates (0% for Zibo No. 5 and 100% for Zibo No. 8) determined by the addition of EDTA in the pot experiment, suggesting that Zibo No. 8 has higher tolerance than Zibo No. 5. Moreover, the castor cultivars have low bioconcentration factors (4.80% for Zibo No. 5 and 5.43% for Zibo No. 8) and low translocation factors (<1%). Consequently, Zibo No. 8 can participate in Cd phytostabilization in highly Cd-polluted areas. The results indicated that glutathione (GSH) as a non-enzymatic antioxidant, and antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT) and guaiacol peroxidase (GPX), were cultivar- and dose-dependent. The higher tolerance of Zibo No. 8 compared with Zibo No. 5 can be attributed to the higher GSH levels in the root and higher GPX activity in the leaf. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 出处 | Journal of Environmental Sciences-China |
| 卷 | 26 |
| 期 | 10 |
| 页 | 2048-2055 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1001-0742 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29411]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang H. Z.,Guo Q. J.,Yang J. X.,et al. Cadmium accumulation and tolerance of two castor cultivars in relation to antioxidant systems. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。